added the javascript for the window scroll and timer bar will be visible when scrolling the window

edx_proctoring/static/proctoring/js/proctored_app.js

@@ -5,4 +5,16 @@ $(function() {
         model: new ProctoredExamModel()
     });
     proctored_exam_view.render();
+
+    // show the timer bar when the window scrolls.
+    $(window).scroll(function() {
+        if ($(this).scrollTop() > 60){
+            $(".proctored_exam_status").addClass('fixed');
+            $(".wrapper-course-material").css('margin-top', '58px');
+        }
+        else {
+            $(".proctored_exam_status").removeClass('fixed');
+            $(".wrapper-course-material").css('margin-top', '0');
+        }
+    });
 });